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HIGH VOLTAGE POWER SUPPLY

  • US 3,836,838 A
  • Filed: 12/04/1972
  • Issued: 09/17/1974
  • Est. Priority Date: 05/05/1971
  • Status: Expired due to Term
First Claim
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1. A high voltage D.C. power supply comprising means for providing an alternating input voltage of predetermined amplitude, means for rectifying said alternating input voltage, means for regulating said rectified voltage, and means for filtering said regulated and rEctified voltage, said filtering means including an output filter capacitor, a zener diode connected between said regulator means and said output capacitor and adapted to clamp said output capacitor to the peak voltage across said regulator means and thereby to increase the filtering effect of said capacitor, and a bleeder resistor connected to provide a discharge path for said capacitor only through the zener impedance of said clamping zener diode when said alternating input voltage is interrupted, whereby said clamping zener diode allows said bleeder resistor to be positioned to provide a discharge path for said output capacitor and so that said bleeder resistor does not substantially reduce the filtering effect of said clamping zener diode and said output capacitor.

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